they'll be joined by jimmy carter, bill clinton, and george w. bush. nbc's lester holt is in soweto with more on this. lester, good morning to you. >> reporter: matt, good morning. what an emotional few days it's been. we're outside the mandela house. it's the house he came home to after his release from prison in 1990. a lot of folks will be lining up tonight for the privilege to be at the stadium and at the memorial service but like the 50 or 60 some odd world leaders coming, none of them were invited. this is going to be an event on a scale rarely seen in any country and it shows how beloved and respected nelson mandela was across this planet. this morning they are hard at work preparing johannesburg's 90,000 seat fnb stadium for tomorrow's public memorial. a potential security and logistics nightmare as scores of world leaders and luminaries ranging from heads of states to rock stars to business tycoons gather to pay their respects to nelson mandela. ♪ since news of his death broke on thursday, south africans have engaged in a virtual nonstop sal